European social mobility is quite low in general. European countries are optimized for welfare, not social mobility. These are wildly different things.
I’m inclined to say that it’s pretty much a given. It’s really hard to be unable to live a sort of comfortable life in Europe (you might not have a brand new TV, but you’ll have your own house and Netflix).
Also, the banks offer very good rates for these types of loans if you have a stable job and prospect.
Renting for very long periods seem like a waste for many people here.